Fabrication of Gradient and Patterned Organic Thin Films by Bipolar Electrolytic Micelle Disruption Using Redox‐Active Surfactants

Abstract

Bipolar electrochemistry could be regarded as a powerful approach for selective surface modification due to the beneficial feature that a wirelessly controllable potential distribution on bipolar electrodes (BPEs). Herein we report a bipolar electrolytic micelle disruption (BEMD) system for the preparation of shaped organic films. A U‐shaped bipolar electrolytic system with a sigmoidal potential gradient on the BPE gave gradient‐thin films including various interesting organic compounds, such as a polymerizable monomer, an organic pigment and aggregation induced emission (AIE) molecules. The gradient feature was characterized by UV–Vis absorption, thickness measurements and surface morphology analysis. Corresponding patterned films were also fabricated using a cylindrical bipolar electrolytic setup that enables site‐selective application of the potential on the BPE. Such a facile BEMD approach will open a long‐term perspective with respect to organic film preparation.

Investigation of Parameter Control for Electrocatalytic Semihydrogenation in a Proton-Exchange Membrane Reactor Utilizing Bayesian Optimization

“…Electrochemical synthesis, which largely entails reactions driven by electricity, has attracted considerable attention in sustainable development (Johnson et al, 2017;Moeller, 2018;Sauermann et al, 2018;Ashikari et al, 2019;Shida et al, 2019;Yano et al, 2020;Zhou et al, 2020;Dong et al, 2021). An important characteristic of electrochemical reactions is the reduction of energy losses.…”

Recent Advances in Bipolar Electrochemistry with Conducting Polymers

“…Commonly this can be achieved by using classic electrochemical methods i. e. cyclic voltammetry, chronoamperometry or chronopotentiometry. In recent years anisotropic modification of conducting objects by bipolar electropolymerization, [17–19] electrochemical post‐functionalization of CPs [20,21] and elaboration of CP gradients on surfaces [22–24] have been studied. In this section, we summarize the recent findings concerning the different methodologies and applications of bipolar electro‐organic synthesis of CPs.…”

Cover Feature: Recent Advances in Bipolar Electrochemistry with Conducting Polymers (ChemElectroChem 1/2022)

“…cyclic voltammetry, chronoamperometry or chronopotentiometry. In recent years anisotropic modification of conducting objects by bipolar electropolymerization, [17][18][19] electrochemical post-functionalization of CPs [20,21] and elaboration of CP gradients on surfaces [22][23][24] have been studied. In this section, we summarize the recent findings concerning the different methodologies and applications of bipolar electro-organic synthesis of CPs.…”